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| author | Rudolf Marek <r.marek@assembler.cz> | 2007-11-13 15:40:21 +0000 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2007-11-13 15:40:21 +0000 |
| commit | cc3ccdb6434402098c1648af12d932c15d3b35e7 (patch) | |
| tree | ca51d03442b3d325c2529d7b96b06dc088242003 /src/southbridge/via | |
| parent | 3adc30eed5b0e3c380893560d96bb754796d960c (diff) | |
| download | coreboot-cc3ccdb6434402098c1648af12d932c15d3b35e7.tar.xz | |
Add support for FID/VID changes messages.
Upon incoming SMAF message from CPU (C3 or FID/VID change), the SB will
assert SLP# which is connected to LDTSTOP_L on K8 CPUs. Question is for how
long. Imho for 100us. Which is more than plenty (2us required) I will try
to justify this once I know what bios to set in SB.
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2965 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/southbridge/via')
| -rw-r--r-- | src/southbridge/via/vt8237r/vt8237r_lpc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/southbridge/via/vt8237r/vt8237r_lpc.c b/src/southbridge/via/vt8237r/vt8237r_lpc.c index 4af73af263..5d2579e530 100644 --- a/src/southbridge/via/vt8237r/vt8237r_lpc.c +++ b/src/southbridge/via/vt8237r/vt8237r_lpc.c @@ -222,6 +222,13 @@ void setup_pm(device_t dev) /* SCI is generated for RTC/pwrBtn/slpBtn. */ outw(0x001, VT8237R_ACPI_IO_BASE + 0x04); + + /* FIXME: Intel needs more bit set for C2/C3. */ + + /* Allow SLP# signal to assert LDTSTOP_L. + * Will work for C3 and for FID/VID change. + */ + outb(0x1, VT8237R_ACPI_IO_BASE + 0x11); } static void vt8237r_init(struct device *dev) |